HARNESS AS-REAR 1878359 - Caterpillar

Due to machine tolerances, the thickness of the shim pack must be determined individually for each winch. The same parts which have been used for measuring must be used together. Shim Pack Thickness:Z = B1 + B2 + M1 + M2-S1-S2-S3-S4-R1-R2-R3-R4The basic shim pack supplied through Service Parts is .120 in. (3.05 mm) thick. Record dimensions M1 and M2, bevel gear mounting distance. The mounting distance has been etched into the inside surface of the bevel gears. Measure and record dimension B1 and B2, thrust bearing assembly. Each thrust bearing assembly includes: one thrust bearing (7) and two thrust bearing races (13). Measure and record dimension S1 and S2, thrust bearing, spacer thickness (25) and S3 and S4 bevel gear spacer thickness (30). Measure and record dimension R1,R2, R3 and R4 bevel gear bearing inner race (6) thickness.The shim pack thickness, (Z) to use in re-assembly of the clutch shaft is the total mounting distance of the bevel gears M1 and M2 plus the total thickness of the thrust bearing assemblies B1 and B2 less the total thickness of the bevel gear spacers S3 and S4, inner bearing races R1, R2, R3, R4 and thrust bearing spacers S1 and S2.Begin the clutch shaft assembly by first installing the brake side components. Install the shim pack, Z (previously determined by the component measurement) onto the clutch shaft between the bevel gear spacer (30). Install two inner bearing races (6) onto the brake side of the clutch shaft.Install a bevel gear/bearing carrier assembly onto clutch shaft, positioning the bevel gear over the needle bearing races (6). Lubricate and install two needle bearings (8) between the bevel gear and the bearing races.Lubricate and assemble the thrust bearing (7) between two thrust bearing races (13) and place over the splined thrust bearing spacer (25).Install the thrust bearing assembly (7, 13, 25) onto the clutch shaft while fully seating the assembly against the bevel gear. Lubricate and install an O-ring (19) and back-up ring (23) into the inner groove of the shaft with the back-up ring placed next to the splined thrust bearing spacer (25). The concave (cupped) side of the back-up ring (23) must always face the O-ring (19).Install a clutch assembly onto the shaft aligning the splines of the clutch friction discs with the splines of the bevel gear. Seat the clutch over the O-ring and back-up ring installed on the clutch shaft.Lubricate and install an O-ring (19) into the outer groove of the clutch shaft and seat into the clutch housing. Install the back-up ring (23) next to the O-ring. Install the brake hub spacer (36) onto the clutch shaft next to the clutch housing. The spacer should hold the O-ring and back-up ring into the clutch housing.Install the brake hub (29) onto the clutch shaft with the small end against the spacer (36).Install bearing cone (9) onto the clutch shaft. Press into position until the bearing cone seats securely against the shoulder of the shaft. Early rotary seal shafts